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LLVM backend for 6502
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Benjamin Kramer f4eeab452a DAGCombiner: Don't drop extension behavior when shrinking a load when unsafe. 
ReduceLoadWidth unconditionally drops extensions from loads. Limit it to the
case when all of the bits the extension would otherwise produce are dropped by
the shrink. It would be possible to shrink the load in more cases by merging
the extensions, but this isn't trivial and a very rare case. I left a TODO for
that case.

Fixes PR16551.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185755 91177308-0d34-0410-b5e6-96231b3b80d8
2013-07-06 14:05:09 +00:00
autoconf Reapply r185601 with a fix for the cmake build. 2013-07-04 01:10:38 +00:00
bindings We're in 3.4 land now. 2013-05-07 20:31:28 +00:00
cmake Reapply r185601 with a fix for the cmake build. 2013-07-04 01:10:38 +00:00
docs MC: Implement COFF .linkonce directive 2013-07-06 12:13:10 +00:00
examples ExceptionDemo: Corresponding to r181820, SectionMemoryManager should belong to RTDyldMemoryManager. 2013-05-14 23:05:00 +00:00
include MC: Implement COFF .linkonce directive 2013-07-06 12:13:10 +00:00
lib DAGCombiner: Don't drop extension behavior when shrinking a load when unsafe. 2013-07-06 14:05:09 +00:00
projects The build system is currently miss-identifying GNU/kFreeBSD as FreeBSD. 2013-07-01 08:07:52 +00:00
runtime Remove "-Wl,-seg1addr -Wl,0xE0000000" from link options. 2013-06-04 15:26:37 +00:00
test DAGCombiner: Don't drop extension behavior when shrinking a load when unsafe. 2013-07-06 14:05:09 +00:00
tools [llvm-ar] Added llvm_unreachable to quiet -Wreturn-type warnings. 2013-07-06 02:39:51 +00:00
unittests Fix windows build. 2013-07-05 22:32:33 +00:00
utils Extend 'readonly' and 'readnone' to work on function arguments as well as 2013-07-06 00:29:58 +00:00
.arcconfig Add .arcconfig to the repository. Useful if someone wants to use phabricator's command line tool. 2012-12-01 12:07:58 +00:00
.gitignore Add extra vim swap file pattern 2012-10-09 23:48:34 +00:00
CMakeLists.txt Support using "host" as a target in LLVM_TARGETS_TO_BUILD when using cmake. 2013-06-26 07:57:53 +00:00
CODE_OWNERS.TXT Add more owners to CODE_OWNERS.TXT (Kostya Serebryany: AddressSanitizer and ThreadSanitizer; Evgeniy Stepanov: MemorySanitizer) 2013-06-27 08:47:12 +00:00
configure Reapply r185601 with a fix for the cmake build. 2013-07-04 01:10:38 +00:00
CREDITS.TXT Identify me on IRC. 2013-06-18 22:09:36 +00:00
LICENSE.TXT Be more specific and capitalize filenames. 2013-05-21 21:22:34 +00:00
llvm.spec.in Tidy up. s/Low Level Virtual Machine/LLVM/. 2012-01-25 22:00:23 +00:00
LLVMBuild.txt LLVMBuild: Introduce a common section which currently has a list of the 2011-12-12 22:45:54 +00:00
Makefile Fix regular expression used by 'make update' to only look for 'I' and '?' at the start of svn info results and to check for spaces after 'I' instead of just after '?'. 2013-07-03 14:48:37 +00:00
Makefile.common Makefile.common: Update a description, s/Source/SOURCES/ , according to MakefileGuide.html#control-variables . 2012-12-07 01:43:23 +00:00
Makefile.config.in Add an autoconf option for turning on -gsplit-dwarf by default 2013-06-25 01:12:25 +00:00
Makefile.rules The build system is currently miss-identifying GNU/kFreeBSD as FreeBSD. 2013-07-01 08:07:52 +00:00
README.txt test 2013-04-17 05:34:03 +00:00

README.txt 

Low Level Virtual Machine (LLVM)
================================

This directory and its subdirectories contain source code for the Low Level
Virtual Machine, a toolkit for the construction of highly optimized compilers,
optimizers, and runtime environments.

LLVM is open source software. You may freely distribute it under the terms of
the license agreement found in LICENSE.txt.

Please see the documentation provided in docs/ for further
assistance with LLVM, and in particular docs/GettingStarted.rst for getting
started with LLVM and docs/README.txt for an overview of LLVM's
documentation setup.

If you're writing a package for LLVM, see docs/Packaging.rst for our
suggestions.